Mathematics, 16.07.2021 14:00 Erin1535
Which of the following are necessary when proving that the opposite angles of a parallelogram are congruent? check all that apply
a. angle addition postulate
b. segment addition postulate
c. opposite sides are perpendicular.
d. opposite sides are congruent
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Which of the following are necessary when proving that the opposite angles of a parallelogram are co...
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